Sets or unsets the "action" and "target" attributes of @menu_item.
If @action is %NULL then both the "action" and "target" attributes
are unset (and @target_value is ignored).
If @action is non-%NULL then the "action" attribute is set. The
"target" attribute is then set to the value of @target_value if it is
non-%NULL or unset otherwise.
Normal menu items (ie: not submenu, section or other custom item
types) are expected to have the "action" attribute set to identify
the action that they are associated with. The state type of the
action help to determine the disposition of the menu item. See
#GAction and #GActionGroup for an overview of actions.
In general, clicking on the menu item will result in activation of
the named action with the "target" attribute given as the parameter
to the action invocation. If the "target" attribute is not set then
the action is invoked with no parameter.
If the action has no state then the menu item is usually drawn as a
plain menu item (ie: with no additional decoration).
If the action has a boolean state then the menu item is usually drawn
as a toggle menu item (ie: with a checkmark or equivalent
indication). The item should be marked as 'toggled' or 'checked'
when the boolean state is %TRUE.
If the action has a string state then the menu item is usually drawn
as a radio menu item (ie: with a radio bullet or equivalent
indication). The item should be marked as 'selected' when the string
state is equal to the value of the @target property.
See g_menu_item_set_action_and_target() or
g_menu_item_set_detailed_action() for two equivalent calls that are
probably more convenient for most uses.
Sets or unsets the "action" and "target" attributes of @menu_item.
If @action is %NULL then both the "action" and "target" attributes are unset (and @target_value is ignored).
If @action is non-%NULL then the "action" attribute is set. The "target" attribute is then set to the value of @target_value if it is non-%NULL or unset otherwise.
Normal menu items (ie: not submenu, section or other custom item types) are expected to have the "action" attribute set to identify the action that they are associated with. The state type of the action help to determine the disposition of the menu item. See #GAction and #GActionGroup for an overview of actions.
In general, clicking on the menu item will result in activation of the named action with the "target" attribute given as the parameter to the action invocation. If the "target" attribute is not set then the action is invoked with no parameter.
If the action has no state then the menu item is usually drawn as a plain menu item (ie: with no additional decoration).
If the action has a boolean state then the menu item is usually drawn as a toggle menu item (ie: with a checkmark or equivalent indication). The item should be marked as 'toggled' or 'checked' when the boolean state is %TRUE.
If the action has a string state then the menu item is usually drawn as a radio menu item (ie: with a radio bullet or equivalent indication). The item should be marked as 'selected' when the string state is equal to the value of the @target property.
See g_menu_item_set_action_and_target() or g_menu_item_set_detailed_action() for two equivalent calls that are probably more convenient for most uses.